It is 8 kyu level

fixed by OP's fork

fixed by OP's fork

Approved

random tests are attackable.

python new test framework is required. updated in this fork

Why would the average of no numbers be 0 ? Why not 1234 or -8888 ;-) ?
I added a note in the description that promises the array will not be empty, and I removed the fixed test in Clojure that was testing for it.

this 'solution' is currently invalidated, so closing ;-)

not sure if it was there at the time, but currently <stddef.h> is #included in the initial code

You are not allowed to use any loops (including for, for/in, while, and do/while loops).

This is not enforced in:

• Python
• Ruby
• Clojure

JavaScript and TypeScript are merely checking the function's toString(), which is not torough enough

added in C

@Shane-Xue the way to check that is by reading the user's source code at test time. Sadly the test cases are locked for this kata

The description states

rounded to the nearest whole number.

so using either ceil or floor is not correct

Ruby 3.0 should be enabled.

In fact, python does not test against that either. However I am not sure if we actually have a way to test against looping in a function from outside the function?